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Frustrated charge order and cooperative distortions in ScV6Sn6 by Pokharel, Ganesh; Ortiz, Brenden R.; Kautzsch, Linus; Alvarado, S. J. Gomez; Mallayya, Krishnanand; Wu, Guang; Kim, Eun-Ah; Ruff, Jacob P. C.; Sarker, Suchismita; Wilson, Stephen D. is a scholarly article available to read on EtoBox.

What is Frustrated charge order and cooperative distortions in ScV6Sn6 about?

Here we study the stability of charge order in the kagome metal ScV6Sn6. Synchrotron x-ray diffraction measurements reveal high-temperature, short-range charge correlations at the wave vectors along q=(1/3,1/3,1/2) whose inter-layer correlation lengths diverge upon cooling. At the charge order transition, this divergence is interrupted and long-range order freezes in along q=(1/3,1/3,1/3), as previously reported, while disorder enables the charge correlations to persist at the q=(1/3,1/3,1/2) wave vector down to the lowest temperatures measured. Both short-range and long-range charge correlations seemingly arise from the same instability and both are rapidly quenched upon the introduction of larger Y ions onto the Sc sites. Our results validate the theoretical prediction of the primary lattice instability at q=(1/3,1/3,1/2), and we present a heuristic picture for viewing the frustration of charge order in this compound.

Author

Pokharel, Ganesh; Ortiz, Brenden R.; Kautzsch, Linus; Alvarado, S. J. Gomez; Mallayya, Krishnanand; Wu, Guang; Kim, Eun-Ah; Ruff, Jacob P. C.; Sarker, Suchismita; Wilson, Stephen D.

Published

2023

Language

EN